An expression of agreement to a very high degree of conviction. Higher even than '4 sho' (!??!)
Expression of which can be shown by putting 3 fingers up in photos, where those within the photo have alligned agreement with something/someone/a higher purpose.
Heavy D: 'Yo G, that hoe shaking her ass like she J-Lo, but she ain't sheeeeeeeeeeeeet'
Magic Sim: '3 sho.'